Demountable rim and tire-fastener for wheels.



C. F. BURKHART. DEMOUN'TABLE RIM AND TIRE PASTENER FOR WHEELS.

. APPLICATION FILED APR. 10, 1912. LQ5J Q'7Q Patented Jan.21, 1913.

INVENTEIR WSTNEEEEE QTTmFeND E:

0. P. BURKHART. DEMOUNT'ABLE RIM AND TIRE PASTENBR FOR WHEELS.

' APPLIOATION FILED APR.10, 1912; g gfig Patented Jan.21,1913.

3 SHEETSSHEBT 2.

WiTNi-LEEEE DR ATTEHQNEYEI O. P. BURKHART.

DEMOUNTABLE RIM AND TIRE PASTENER FOR WHEELS.

APPLICATION FILED APR.10, 1912.

Patented J an. 21, 191 3.

INVENTUI'Q J $3 s $HEETSSHEET 3.

Q MW

ATTUFQNEYE dirt so that they are not liable to get out of of threesheets: Figure 1 is a side elevation of of the parts when thedemountable rim is re- CHARLES F. BURKHART, OF NEW YORK,

1., ASSIGNOR TO WALTER J. REIMAN, 0F

BUFFALO, NEW YORK.

DEMOUNTAIBLE RIM AND TIRE-FASTENER FOR WHEELS.

1,051,079. Specification of Application filed April 10, 1912. Serial No.689,722.

To all whom it may concern Be it known that 1-, CHARLES F. Binni- HART,a citizen of the United States, residing at New York, in the county andState of New York, have invented new and .useful Improvements inDemountable Rims and Tire-Fasteners for Wheels, of which the followingis a specification. I

This invent-ion relates to improvementsin. means for fastening a tire toa wheel rim and also.- improvements in means for demountably attachingsaid rim to the folly of the wheel. T Itis the object of this inventionto provide means for permitting the tire to be. attached to as well asremoved from the rim more quickly and conveniently than ,has beenpossible heretofore and also to pro-vide means for locking thedemountable rim on the wheel which are of simplified construction, whichare protected from moisture and order and which. can be easily andconveniently manipulated when it is desired to apply the rim to orremove the same from the wheel;

- In the accompanying drawings consisting a wheel embodying myimprovements and viewed from the inner side thereof. Fig. 2 is avertical transverse section, on an enlarged scale, taken .in line 2 2,Fig. 1. Fig. 3 is a side elevation, partly in section, of the Wheelembodying my improvements and viewed from the outer side thereof. Fig. 4is a fragmentary cross section, on an enlarged scale, taken in line 44,Fig. 3. Fig. 5 is a fragmentary side elevation, on an enlarged scale, ofthe wheel viewed from the same side as Fig. l and showing thepo-sitionmoved therefrom and also showing the cover of thegear casing removed soas to expose the mechanism therein. Fig. 6 is a similar view of thewheel viewed from the same side as Fig. 3 but on a larger scale. Fig. 7is a longitudinal section taken in line 77, Fig. 5. Figs. 8 and 9 arefragmentary cross sections taken in the correspondingly numbered linesin Fig.

Similar characters of reference indicate corresponding parts throughoutthe several views.

. In its general organization the-wheel. which is shown in the drawingsfor illustrating Letters E'atent. Patented Jan. 21, 1913.

.my improvements comprises a felly 1, a

hub 2, spokes 3 connecting the felly and hub, a seat ring a of metalpermanently secured to the periphery of the folly and provided on itsouter side with two annular inclined faces or seats 5, 6, anouterremovable or d'emountable rim 80f metal provided on its inner side withtwo inclined annular faces or seats 7, 9 adapted to engage with" thecorresponding seats of the fixed inner. ring, and a tire mounted on theouter side of the demountable rim and consisting of an outer shoeilOofthe usual crescent form in cross section having its opposite edgesrest-ingbnthe demountable rim and provided with out wardly projectingannular beads 11,, 12 and an inflatableinner tube 13 engaging withtheinner side of theishoe.

The demountable rim is provided at its inner or rear circumferentialedge with an inwardly turned annular hook-shaped flan e 14 which isadapted to engage with the bead att-he rear or inner edge of the shoefor holding the same on the dem'ountable rim. At its onter or front edgethe demountable rim is provided with an inwardly projecting annularflange 15 for the purpose of stiffening this edge of the rim. Removablymounted on the outer side of the de-j mountable rim adjacent to theouter edge thereof is a removable tire fastening ring 16 which iscrescent-shaped in cross'section and engages with the outer head of theshoe for holding the same -on the demountable rim. Between the fasteningring and the outer flange of the 'demountable rim an annular series ofradial openings 17, 18 are formed in the body of the demountable rimwhich varyin number, eight of such openings being shown for example andtwo of them 17, 17 being comparatively long and two sections 19, 19,each of which is of.

engages with one of the intermediate locking openings 18 of thedemountable rim.

22, 22 represent two locking bolts each of which is arranged with itsbody radially between the opposing end locking lugs of the two lockingring sections and bears with the head at its outer end against the outeredges of these ring sections while the nut at the inner end thereofbears against the inner side of abridge plate 25 which engages with theinner side of the demountable rim and exte'nds across the adjacent largeopening 17 thereof. The outer side of the head of this locking bolt isreferably flush with the pe-, riphery of the ocking ring sections andthe inner side of this head is preferably tapered inwardly and engageswith correspondingly inclined faces 26 on theadjacent parts of thelocking ring sections so that upon tightening the nut of this bolt theend lugs of these sections will be drawn tightly against opposite endsof the companion opening 17 in the demountable rim and thereby holdthese parts securely in place- When it is desired to remove the shoe ofthe tire the locking or clamping bolts 22 are first removed so as torelease the locking ring sections. Each of these sectionscan now bemoved laterally or outwardly so as to disengage its lugs from thedemountable rim and thus free the fastening ring so to permit the outeredge of the shoe to be disengaged from the demountable rim preparatoryto removing the tire w'holly from the demountable rim or only so much asisnecessary for inspection or repairs.

By dividing the locking ring into a plurality of sections instead ofsplitting the same only at one pointthis ring can be removed from thedemountable rim and also applied thereto without requiring -the lockingring to be sprung unduly, thereby requiring less exertion and permittingthe tire to be repaired much more easily and convenient-ly than ispossible when employing a locking ring which is split only at one point,which is particularly import-ant when the tire has been in use for sometime and the locking ring has become rusted on the demountable rim.Furthermore, the employment of a locking ring constructed in sections inthe manner described permits of utilizing the additional intermediatelocking lugs whereby the locking ring is held on the dcmountable rim atmore frequent intervals and thus holds 'the tire securely on thedemountable rim all the way around which is particularly desirable inthe case of automobiles which are used for touring or racing purposesand which are called upon frequently to make short or quick turns in theroad at high speed.

The means for detach'ably securing the demg ring 27 which is mounted onthe inner or rear side of'the telly so as to be capable of rotationciroumferentially but incapable of moving axially and which is providedat its outer edge or periphery with a plurality of locking lugs 28adapted to engage behind companion locking lugs 29 projecting inwardlyfrom the adjacent inner part of the demountable rim. Although variousmeans may be provided for thus mounting the locking ring 27 on the tellythose shown in the drawings are suitable and comprise a plurality 0thook-shaped bosses or collars 30 each of which is secured to theadjacent part of the telly by means of a screw 21 as shown or otherwlseand provided on its outer side with a rabbet or guideway '32 upon whichthe adjacent part of theinner edge of. the locking ring slides, as shownin Figs. 1, 5 and 9. I

Upon sliding the demountable rim in wardly over the seat of the tellythe locking lugs of the demountable rim pass through the space betweenthe locking lugs of the locking ring 27 and inwardly beyond the same.This locking ring is then turned circumferentially sufiiciently to bringits locking lugs in front of the lugs on the demountable rim. wherebythe latter is locked in place on the telly and prevented from beingwithdrawn laterally outward or forwardtherefrom.

The turning movement of'the rim locking ring is preferably effected bymeans which comprise a gear inion 23 arranged along the inner side of t1e felly and meshing with mountable rim to the telly comprise a lock asegmental gear rack 33 projecting inw'ardly from the rim locking ring.The gear segment is preferably formed separate from the rim locking ringand provided at .its outer edge with an extension 24 which is ablyconsist of a flat sided shank 37 which is adapted to receive a wrench.key or crank of suitable construction for turning the shaft and the gearwheel.

Means are provided. for positively holding the gear 'pinion and rimlocking ring against turning when the wheel is in use.

Figs. 2, and 6, the same preferably com-' These means are constructed inaccordance with my invention and, as best shown in prise a horizontallymovable, slide 38 arranged to move parallelwith the axis of the gearpinion and. shaft in a guideway 39 formed in the'inner part of a bracket36 and provided at its inner end with an out-' wardly projecting lockingtooth 40 which normally engages in the space between two adjacent teethon the inner slde ofthe gear pinion. At its inner end the slideiskp-roway and bearing at its outer'end against a shoulder. 43 formed atthe inner end of the oflset stud while the inner end ofthe spring bearsagainst an abutment block 44 which is secured in the guideway above theslide by means of a pin 45 passing through the bracket behind theabutment block, as shown in Fig.2. The outward or forward movement ofthe slide is limited by a shoulder 46 formed at the front end thereofand engaging with a stop formed on the bracket by means of a stop block47 secured to the bracket at the front 'end of the guideway' by means ofa pin 48. While the slide is in a position in which its locking toothen-' gages with the gear pinion the stud or tapp et thereof projectsforwardly beyond the front face of the bracket, as shown in Fig. 2.

Upon applying a wrench preferably of the socket type to the shank of thegear shaft preparatory to turning the latter this wrench during suchapplication engages with the tappet vand'pushes the same together withthe locking slide and tooth in wardly to such an extent that the lockingtooth is moved out of engagement from the gear pinion, as shown bydotted lines in Fig. 2, thereby releasing this pinion and permitting thesame to be turned by the wrench for operating the rim locking ring. Uponremoving the wrench from the shank of. the pinion shaft the springautomatically shifts the locking slide outwardly or forwardly so thatthe locking tooth of the latter reengages with the adjacent teeth of thegear pinion and thereby prevents unintentional turning of the same aswell as the rim locking ring, whereby accidental disengagement of thedemountable rim from the felly is prevented. By thus providing a lockingslide with a tooth which engages directly with the gear pinion theconstruction is simplified and greater security is obtained.

For the purpose of protecting the gear- &

ing and locking devicesagainstinterference by moisture and dirt thesame'are inclosed andfor this purpose a casing is provided whichcomprises a side wall 49, formed on a the inner side of the bracketaround the gear pinion and rack and terminating at its ends adjacent tothe inner side of the rim locking ring at opposite en'ds of the gearrack, and

a removable cover or plate-50 which is de t-achably secured to the rearedge of the wall by means of screws 51 or otherwise and extends over therear side of the gear wheel,

and the gear rack. The inner part of the ings 53 of leather .or similarmaterial seated in dove-tail pockets 54 formed in the ends of the walland engagingwith the inner side of the rim locking ring, as shown inFigs. 5 and 8. A dust tight joint is also produced between the outerportion of the cover or plate and the outer side of the rim locking ringadjacent to the gear segment this being preferably effected by means ofapacking 55 of curved form which is preferably constructed of leather,felt or similar material and seated in a curved dove-tail recess 56formed on the inner side of the cover .plate and engaging with theadjacent outer surface of the rim locking ringfiils shown in Figs. 2 and7. By this means water, dust and dirt are effectually excluded from theinterior of the housing or casing which incloses the.

gearing and locking devices and thereby keeps these parts at all timesin. a condition in which'they can be operated properly.

I claim as my invention: 1. The combination of a wheel having a fellyprovided with a seat, a tire supporting rim engaging with said seat andprovided with an annular row of locking lugs, a looking ring rotatablysupported on the felly and provided with a plurality of locking lugsadapted to engage the lugs of the rim and'also provided with a gearrack, a shaft journaled in a bearing on the felly and provided atone endwith a wrench shank and at its other end with a gear pinion meshing withsaid rack, and a slide guided in a way on ,the felly and having a studat one end adjacent to said wrench shank while its opposite end isprovided with a locking tooth adapted to engage with the teeth of saidgear pinion.

2. The combination of a wheel having a felly provided with a seat, atire supporting rim engaging with said seat and provided with an annularrow of locking lugs, a lock- 5 tween the ends of the wall and the IlIIllocking ring which means may consist of packing ring .rotatablysupported on the felly and provided withia plurality of locking lugsadapted to engage thelugs of the rim and also provided with a gear rack,a shaft journaled in a bearing'on the felly and provided at one end witha wrench shank and at its other end with a gearpinion meshing with saidrack, a slide guided in a way on the telly and having a stud at one endadjae'ent to said wrench shank while its oppoing ring rotatablysupported on the telly and provided with a plurality of locking lugsadapted to engage the. lugs of the rim and also provided with a gearrack, a gear pinion engaging with said rack, a bracket mounted on saidtelly and pivo-tally sup porting said pinion and having a casing whichincloses said gear rack and pinion, and which comprises a side wallarranged on said bracket around the gear pinion and having its endsarranged adjacent to the inner edge of said locking ring on oppositesides of said gear rack and a plate secured to said wall and arrangedover said gear rack, pinion and the adjacent part of the locking ring, apacking arranged between the ends of said wall and the inner edge of thelocking ring, and a packing arranged between the inner side of saidplate and the outer side of said locking ring.

\Vitnss my hand this 4th day of April, 1912.

CHAR-LES F. BU RKHART W itnesses VAT/PER J. REIMAN. THEo. L. Porr.

Copies of this patent may be obtained for five cents each. by addressingthe "Commissioner of Patents.

' Washington, D. 0.

